The announcement that the Washington Post Company was moving its Facebook app Social Reader off the social network and onto a standalone site is the latest example in a long string of failures by Facebook to keep a balance between what users want and what businesses and organizations want. This follows similar news from The Guardian a couple of days ago. As with most things that Facebook has tried since 2009 to do to grow its relevance outside its own closed garden, things started off really well and went south very quickly. Rewind to a year ago when Facebook first tied in its open graph technology…